<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>练习F.G.H</title>
    <style>
        div {
            margin: 20px;
        }
        #F {
            width: 200px;
            height: 100px;
            background-color: gray;
            border-radius: 50%;
        }
        #G {
            width: 0px;
            height: 0px;
            border: 100px solid gray;
            border-right: 100px solid transparent;
            border-radius: 50%;
        }
        #H {
            width: 0px;
            height: 0px;
            border-top: 100px solid red;
            border-right: 100px solid transparent;
            border-bottom: 100px solid yellow;
            border-left: 100px solid transparent;
            border-radius: 100px
        }
    </style>
</head>
<body>
    <div id="F"></div>
    <div id="G"></div>
    <div id="H"></div>
    <div></div>
    <div></div>
    <p>branch</p>
    <p>fsdf</p>
    <p>sdfdghjghj6877</p>
</body>
</html>